Squib-lighting device



Dec. 11 1923.

A. KRASILNIKOFF SQUIB LIGHTING DEVICE Filed May '7,

a e0 0 0 a o 0 g ea Patented Dec. 11, 1923.

UNITED STATES ANTHONY KRASILNIKOFF, OF NEW YORK, N. Y,

SQUIB-LIGHTING DEVICE.

Application filed May 7,

To all whom it may concern:

Be it known that I, ANT ONY KRASILNI- KOFF, a citizen of Russia, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Squib-Lighting Devices, of which the following is a specification.

This invention relates generally to detonating having particular reference to a device for lighting the squibs employed in exploding charges of black powder used in blasting in mines.

The invention has for a general object to provide a simple device, operable at a distance, for lighting the squibs generally employed to explode such blasting charges.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the followingdescription and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

Fig. l of the drawings is a side elevational view, partly in vertical section, of my improved squib lighting device.

Fig. 2 is a front view thereof.

Fig. 3 is a horizontal sectional view taken on the line 3-3 of Fig. 1.

Fig. 4 is a fragmentary longitudinal sectional View showing a modification.

As here embodied my improved squib lighting device comprises an elongated casing indicated generally at 10 and having a short tubular upper end 10 and a longer tubular tapering lower end 10*, between which parts is a channel shaped body 10". This channel shaped body 10 may be flattened toward its upper end as at 10 for convenience in pivoting thereto an arm 12 which is inserted between the side walls of the member and pivoted thereto as at 13.

Attached to this arm 12 at a point between its endsis a cord 14 which is led through a suitable aperture, in which is an eyelet 14' in the back of the channeled body 10 and then upwardly along the same, be ing inserted into the lower end of the tubular member 10 through an opening formed by cutting out or notching one side of the part 10 as indicated at 15. The cord 14 passes upward through the tubular member 10' and may be uided to a desired point through eyes 17 xed on spikes 18 of which spikes maybe driven into the tunnel 1923. Serial No. 637,252.

wall for support. A spring strip 26 is fixed at one end to and within the casing portion 10 and presses against the squib to hold the latter frictionally in place.

The device is set for use with the usual squib 20 by means of which the charge is to be exploded inserted through the lower tubular member 10, the end of the squib which is to be ignited extending into the channeled body 10". Upon the free end of the arm 12 a ball 21 of cotton or like material is fixed, the arts being so arranged that'this ball will contact with the upper end of the fuse 20 when the free end of the arm 12 is swung toward the latter by pulling on the cord 14. Just below the point where the cord 14 passes through the channeled body 10 a horizontal partition 22 extends across the latter the purpose of which partition is to prevent ignition of the cord, or injury by undue heating where the element 14 comprises a flexible wire, the partition 22 and arm 12 having cooperating slots 23 and 24 therein which permit of the arm swinging into the channeled member 10 to cause the ball 21 to engage with the end of the squib 20. Formed in the casing portion 10 is an indentation 19 adapted to engage a suitable opening on the arm 12 to yieldingly hold the latter in raised position.

In the use of my improved device a hole is drilled into the coal to receive the charge of black powder which is to be exploded, the charge of powder being indicated at 30 in Fig. 1 of the drawings. The lowerportion 10 of the casing is inserted into the hole above the powder charge and packed around with earth, as indicated at 31. The cord 14 is led to a suitable spot from which the charge can be safely exploded, and the arm 12 is swung upwardly and engaged with the catch 19. The ball 21 is placed on said arm and ignited. The workman then goes to the proper place and pulls cord 14, swinging the arm 12 downward and causing the ball 21 to engage and ignite the squib 20. The whole device may be withdrawn by pulling on the cord 14 after the ball 21 has been in contact with the squib for a short time, and the charge fails to explode.

In the modification shown in Fig. 4 the lower portion of the casing is in the form of a detachable frusto-conical section 1O frictionally engaged with the main casing. A hook 35 is inserted in the upper part of squib 20, this hook having an eye 36 on its upper end through which the cord 14 is passed. After the arm 12 has been swung down and the squib ignited, the book will be freed by the burning of the squib. After pulling down arm 12 the workman maintains a slight pull on the cord 14 and by reason of the release of the looped portion of the cord engaging said eye the workman at the end of the cord will receive a signal and will immediately pull up the main upper part of the device, leaving the lower frusto-conical member 1.0 in the earth, it being understood that the frictional hold of said member 10 on the earth Will be considerable.

Having thus described my invention what I claim as new and desire to protect by Letters Patent of the United States is as follows:

1. A squib lighting device comprising an element adapted to detachably support the squib, an arm hinged there-to and adapted to carry a burning material into contact with said squib, and a cord connected to said arm to provide means for drawing the burning material into igniting position.

2. A squib lighting device comprising an element adapted to detachably support the squib, and an arm hinged thereto and adapted to carry a burning material into contact with said squib and a cord connected to said farm, said cord being adapted to lift said element from engagement with said squib.

3. A squib lighting device comprising a channeled casing adapted to enclose the free end of the squib, an arm hinged to said casing and adapted to carry a burning material into contact with the squib, and a cord attached to said arm.

4. A squib lighting device comprising a. channeled casing adapted ,to enclose the free end of a squib, an arm hinged to said casing and adapted to carry a burning material into contact with the squib, and

a cord attached to said arm, said channeled casin havfn tubular lower and u r Ha m Ht) ends adapted respectively :to enclose the squib and to form a guide for said cord.

5. A squib lighting device comprising an element having a detachable portionv adapted to engage squib, an arm. hinged to and adapted to carry a burning material into contact with said squib, and a cord connected to said arm, said cord being adapted to lift said element from engagement with said detachable portion and a member engaged with the squib and adapted for release by burning of the squib whereby a signal may be given that the squib is ignited.

6. A squib lighting device comprising an element having a detachable portion adapted to engage a squib, an arm hinged to and adapted to carry a burning material into contact with said squib, and a cord ANTHONY KRASILNIKOFF. 

